Table 1.

Comparison of self-efficacy, decisional balance and processes of change in intervention and control groups (before and after intervention)

Variables	Median (range)		P*
	Intervention	Control
Self-efficacy
Before intervention	21 (10)	20 (12)	0.51
After intervention	22 (8)	20.5 (15)	0.04
P**	0.005	0.63
Decisional balance
Before intervention	39 (17)	39 (20)	0.41
After intervention	40 (29)	39 (14)	0.31
P**	0.97	0.69
Consciousness-raising
Before intervention	10 (11)	10 (12)	0.36
After intervention	12 (10)	10 (10)	<0.001
P**	<0.001	0.71
Dramatic relief
Before intervention	12 (10)	11 (9)	0.08
After intervention	12 (8)	12 (12)	0.01
P**	0.01	0.23
Environmental reevaluation
Before intervention	12.5 (12)	13 (9)	0.45
After intervention	13 (6)	12 (12)	0.01
P**	0.01	0.13
Self-reevaluation
Before intervention	16.5 (12)	17 (12)	0.31
After intervention	17 (10)	15.5 (12)	0.15
P**	0.61	0.12
Counter conditioning
Before intervention	14.5 (15)	14.5 (13)	0.79
After intervention	15 (13)	14 (14)	0.81
P**	0.38	0.21
Social liberation
Before intervention	20 (16)	20 (17)	0.99
After intervention	22 (16)	20.5 (17)	0.004
P**	0.004	0.86
Helping relationships
Before intervention	15 (12)	15 (11)	0.39
After intervention	16 (11)	15 (11)	0.12
P**	0.001	0.87
Reinforcement management
Before intervention	24 (14)	24 (14)	0.76
After intervention	25.5 (11)	24 (18)	0.006
P**	0.001	0.73
Self-liberation
Before intervention	19 (16)	19 (15)	0.65
After intervention	21 (14)	19 (13)	0.001
P**	<0.001	0.37
Stimulus control
Before intervention	19 (19)	18 (18)	0.97
After intervention	20 (16)	19 (15)	0.26
P**	0.01	0.17

*Mann-Whitney U-test, **Wilcoxon test